MESON Chess Problem Database

Problem Display
PID: 184993 (4R3/8/1r1p3K/1prp4/QP1k1Np1/N3p1B1/1P1b1n2/5B2 w - - 0 1)

Kubica, E

Bulletin Ouvrier des Echecs, 1949

4R3/8/1r1p3K/1prp4/QP1k1Np1/N3p1B1/1P1b1n2/5B2

#2

9 + 10

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Sxc2#
    • 1...Bc3
      • 2.Sc2#
    • 1...Sd3
      • 2.Se2#
    • 1...Se4
      • 2.Se6#
  • Tries
    • 1.Bh4?
      • threat
        • 2.Bf6#
      • 1...Sd3
        • 2.Se2#
      • 1...Se4!
    • 1.Qc2?
      • threat
        • 2.Se2#
        • 2.Se6#
      • 1...Rxc2
        • 2.Sxc2#
      • 1...Sd3
        • 2.Se2#
        • 2.Qxd3#
      • 1...e2!
    • 1.Qb3?
      • threat
        • 2.Se2#
      • 1...Rc3
        • 2.Qxd5#
      • 1...Bc3
        • 2.Sc2#
      • 1...e2!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qg7#
      • 1...Rc7
        • 2.Sxb5#
      • 1...Rb7
        • 2.Sc2#
      • 1...Sd3
        • 2.Se2#
      • 1...Se4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);N_GUARD::S(C),XR(g)
    • B(a);S_CUTR(g)::S(C)
    • S(b);SBLOCK::S(G)
  • Tries
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • S(b);SBLOCK::S(G)
      • Refutation
        • S(b);
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • R(g);XQ(E)::S(C),XR(g)
      • Refutation
        • P(c);P_PINS(G)
    • Try
      • Q(E);
      • Threat
        • S(G)
      • Vars
        • R(g);N_GUARD::QAR1(E),XP(h)
        • B(a);S_CUTR(g)::S(C)
      • Refutation
        • P(c);P_PINS(G)
  • Actual
    • Q(E);
    • Threat
      • QAB(E)
    • Vars
      • R(g);N_GUARD,P_SPINR(i)::S(C),XP(f)
      • R(i);P_SPINR(g)::S(C)
      • S(b);SBLOCK::S(G)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).